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    <title>Document</title>
    <script>
        //利用对象封装自己的数学对象 里面有 PI 最大值和最小值
        var myMath={
            PI:3.141592653,
            max:function(){
                var max=arguments[0];
                for(var i=1;i<arguments.length;i++){
                    if(arguments[i]>max){
                        max=arguments[i];
                    }
                }
                return max;
            }
            ,min:function(){
                var min=arguments[0];
                for(var i=1;i<arguments.length;i++){
                    if(arguments[i]<min){
                        min=arguments[i];
                    }
                }
                return min;
            }
        }
        console.log(myMath.PI);
        myMath(1,5,8);
    </script>
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